There are
1,781 mi
from Yonkers, NY to Thornton, CO
That's the driving distance. It would take 1 day 8 hours to go from Yonkers, New York to Thornton, Colorado.
The flight distance (direct flight from Yonkers, NY to Thornton, CO) is 1,628.03 mi.
1,781 mi = 1.61 kms